Land Surveying Techniques
The kinds of land survey technique chosen for use depend on a multiplicity of elements like the kind of survey that is being carried out. Land surveys are actually divided into three basic categories: standard land surveys used to fix property boundaries, compute land areas etc.; engineering surveys to assure that the building is built in correct place; and informational surveys which are applied to produce maps and charts. Yet another classification of land surveying technique is either geodetic surveys or plane surveys. Geodetic surveys are very accurate and address large areas by taking into consideration the curvature of the earth along with additional land survey techniques.
The five fundamental techniques are:
The triangulation land survey technique applies a sequence of linked triangles that unite and extend beyond each other, and from there slants can be evaluated from fixed stations. This is the most normally used land survey technique, which is also very well-organized since it reduces the count of measuring that should be made.
An electronic distance measuring tool which helps in measuring the dimensions of the triangles is used in the trilateration land surveying technique. It is from these measurements of the dimensions that the angles are computed. Trilateration is an ideal land survey technique in coarse land where it can be better off to get precise calculations than by means of the customary triangulation land survey technique.
Sequences of lines whose measured distance and dimensions are linked mutually by points in fixed locations are used in the traverse land survey technique. Traverse lines are either open or closed, and they are adjustable to move about rough terrain or obstructions as necessitated. This sort of land survey technique is generally used for producing preliminary surveys to build new roads.
The elevation in a particular area can be measured with the leveling land survey technique. This method involves determining the measurements of perpendicular distances on a calibrated rod by means of a leveling instrument. There are several leveling instruments, nevertheless dumpy levels, theodolites, and transits are the ideal options. The variation in the elevation between two points can be calculated with the help of trigonometry.
The last land surveying technique is radiation. The radiation land survey technique is utilized most regularly in combination with a plane table. By means of a fixed position above a ground position, a variety of points are assumed at the border of the survey area. These points are depicted on a piece of paper and the lengths evaluated and transformed to the requisite scale on the survey sheet. Radiation is generally applied with other land survey techniques like traverse and triangulation.